Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Continuous Monitor Self-Test (Wiggle Test): Notes
The CONTINUOUS MONITOR SELF-TEST allows a technician to attempt to recreate an intermittent fault while monitoring the system. The CONTINUOUS MONITOR SELF-TEST may be used in both KOEO and KOER modes.
The test is divided into 4 areas: Establishing Continuous Memory Codes, Clearing Continuous Memory Codes, Continuous Memory Codes To Be Tested, and Continuous Monitor (Wiggle) Test. Perform steps in sequence.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.